Sash-lock.



PATBNTBD AUG. 9,1504...

A @XM/fj P, J. Lowm..

sfasv Locx. AP?LI0ATXIDS YILED JULY 29. 1503.

ngi,

xo sonni..

UNITED STATES.

Patented August 9, 1904;

PATENT Darien l `R.-\.\`l\' J. LUWERY, UP` FORT FAIRFIELD, MAINE.

saisi-iioox. l

SPECIFICATION forming Vpara or Letters Paten; No. 767,370, dated August 9, 1904.

' Application auf'. my 29,1903. smi no. 161.457. no modem Be it known that l. FnAxxJ. Lownm'. acitizen ofthe United States, residing at Fort Fairlieh in the county of Aroostook and State of Blaine. have invented certain new and useful Improvements in Sash-Locks, of which the following is a specitication, reference being had therein to the accompanying drawings.

This invention relates to' improvements in sash-locks especially adapted for use in railwa v-car windows: and the object of the invention is to provide a window-lock which willallow the lower windowsash to becti'ectively locked when opened atany height; 4and it consists of a locking mechanism contained within n case provided with normally.projecting prongs and a rack-bar for the engagement of said prongs, the case containing the lock preferably being set in one upper side of the lower window-sash and the rackbar set m the corrcspondmgsideofthe wxndowframe,asshown 1n the ligures of the drawings', and when so constructed is easily manipulated with one hand. and the person desiring to open or close the sash may release the supporting device with the same hand used in raising or lowering the sash by a pressure of the thumb directed against the handle or button but this order of inserting the lock and rack-bar may be reversed, the tooth rack-bar being set into a groove in the sash and the case containing thc lock set in the window-frame at about the top of the window-sash on the same side as the rack-bar, as may be readily understood.

The invention consists in the combination of elements and in certain parts of construction entailed in the combination of said elements to obtain the desired result.

A full understanding of the invention can best be given by a detailed description of a preferred'construction embodying the various features of the invention, and such a description will now be given in connection with the accompanying drawings, and I attain my object by the mechanism there illustrated, sl1ow ing such preferred construction, and the features forming the invention will then be specifically pointed out in the claims. In said drawings, Figure 1 is a side elevation, partly in section, showing the outside casing und rack-barof my device as applied to is a rear vertical crosssectionul view through a portion of the windowsash and the case containing the lock. Fig. 5 is a front elevation of -the lock, showing the projecting prongs through the side of the case.

Similarletters referto similarpartsthroughout the several views.

Reference now being had to the details of the drawingsl by letter, u designates the window-frame, on one side of which is inserted and attached a rack-bar L, having two rows of teeth I nl', vertically sepa rated by a passa-ge f. in which' runs one of the window-cords g, attached to the window-sash c, which 1s lnsorted in the window-frame u and one side of which travels upon thef'ront faces l.' of the teeth (I d', the teeth and the teeth d' el' having horizontal interdental spaces or notches e to allow of the inserting of the prongs 'of thevboltj,` traveling on the guide bars n u and p p', which normally extend through the front face of the casing zr, which is 'countersunk in the frame of the window adjacentto said rack-bar, the prongs i locking within the notches e and normally kept in place by the spring m pressing against its rear side, the spring being fastened at one end, as at m', to the inner upper side-of the casing :c and having the bearing-block my for steadying it in place.

The button or handle attached to the shank r, is used to operate the spindle x, on which is rigidly attached an arm t, which when the handle l is turned to the right works against the front face of the bolt, pressing the bolt back and withdrawing the prongs'z'- i' from con-tact with the teeth of the rack-bar, so that they will not strike against the teeth as the window is raised or lmvercd. The spring m immediately presses the prongs into place upon the releasing of the handle thus locking the window at any desired height..

As is readily seen, the order of inserting the casing and rack-bar can be changed, the rackbar beingeountersunk, if desired, in the side of the window-sash and the casingfc counter is',Y

sunk in the window-frame u, when the .sanne l between the prongsnguinst front of the boltl results would be obtained.

Having thus fully described my invention. what l ehtim :is new, und desire to secure by Letters Potent, is

1. A sash-lock eomprising :t mel; yprovided with two or more rows of parallel teeth :md n locking member consisting of it spring-:xv touted bolt provided with two or more purnllel prongs for engmging with the ruck und nn :trio mounted in `Quid easing und in ContactA with said bolt for diengngng said bolt.

2. A sash-lock comprising in combination with the vframe of the window :1nd the window-sash, n ruck-bnr hnving n double row of teeth in one end of tho \\'intlo\\fr:nn'c, :tensng sented in the windo\\snsh, n spring-netti# ated bolttrnrelng in said easing provided with prongs in mesh with said teeth, a spring pressing outwardly against the rear of the bolt. and n. key within the casing extending `und having its lmndlo without easing, `suhstnntinily :w shown. i

`3. In :t .ehh-lock in et-nnbixnttion with sash and fname members of :t niek-bnr inwrted in I one of tht` members having :i double row of lmrtdiel teeth. horizontal interdentnl notches between the teeth, n easing in the other mem` ber, :x bolt mounted within the easing having a pair of horizontal prongs extending with ont the enbing :1nd locking in the notches between the teeth und :in operuting-handle for withdrawing the prongs und moving them horizontnll within the easing.

In te trnony whereof I nflix my signature in presence of two witnesses.

FRANK J. Lowietn. wimtms.

XVM. T. SPEAK,

J- R. CARY. 

